August d



- 2 Sheets-Sheet 1. A. D. 000K. PUMP (No Model.)

faQ/Q' (No Model.) Sheets-Sheet 2.

A.D.GO0K.

PUMP. Y y No. 484,139. Patented Oct. 11, 1892.

- the jointis formed. Fig. 2 is a side elevation UNITED STATES PATENTOFFICE.

AUGUST D. COOK, OF LAWRENCEBURG, INDIANA.

PUMP.-

SPECIFICATION fotl'niltlgl part Of Letters :Patent No. 484,139, datedOctober 11,1892.

Application tiled May 23,1892, ySerial No. 434,007. (No model.)

`To all whom t may concern.-

Beit known that I, AUGUST D. 000K, a citizen of the United States,residing at Lawrenceburg, in the county of Dearborn and State ofIndiana, have invented a new and useful Pump, of which the following isa specification.

My invention relates to improvements in -pumps of that class employingsunken pipes; IO

and the objects in view are to provide an improved joint between theworking barrel or vcylinder and the pipe; furthermore, to so locate thesaid joint as to prevent the admisbe particularly pointed out in theclaims.

Referring to the drawings, Figure 1 is a vertical longitudinal sectionthrough that portion of the pipe and working barrel at which of thepump. Fig. 3 is a transverse section on a line immediately above thecoupling.

Fig. 4 is a detail in perspective of one of the Like numerals ofreference indicate like` coupling is provided with a pair of vertical'perforations 5, and in the same ride the oppoposite twin stems 6, whichare attached to a conical valve-plug 7. The valve-plug 7 is adapted tonormally be seated upon acountersunk valve-seat 8, located at oppositesides of the coupling and in the upper edge thereof and formed at theupper ends of L-shaped ports or escapes 9. It will be seen that thelower ends of thevalve-stems extend belowthe object and purpose of thesame will hereinafter appear.

10 designates a brass tube, which from a point above its lower end isprovided with an annular series of slits, formingtongues 1l. Encirclingthis tube is a rubber sleeve l2, which is provided at its upper end withan external boss 13, integrally formed therewith. .This boss has anannular recess or slit extending from its lower edge to. a point aboveits middle and receives the upper end of a second outer tube 14, whichencircles the rubber sleeve and inner tube and, like the inner tube, hasits upper end slitted at intervals to form a series of spring-tongues15. The two tubes and the rubber sleeve as thus assembled are insertedlower end first into the upper end of the Working barrel, and afterbeing pushed down sufliciently far to permit only the annular rubberboss to extend above the Working barrel the two tubes and said barrelare securely soldered together or may be otherwise fastened, if desired.j

16 designates the pump-rod 0r plunger, and the same is provided at itslower end with an vordinary upwardly-opening valved plungerhead 18.Above the head and near the center of the rod an annular shoulder 19 isformed, and at the upper end of the plungerrod the same is threaded, asat 20, to receive a coupling 21, which forms a means of connectionbetween the pump or plunger rod and the usual sucker rod or poles. Thecoupling mentioned is provided at its center with a squaredwrench-receiving surface 21, above the same with a threaded tenon 22 toreceive the socket at the lower end of the sucker rod or poles, and atits lower end with athreaded socket 23, which removably receives theupper end of the pump or plunger rod.

24 designates a conical plug or spreader, and the same is provided witha central longitudinal bore 25, reduced at its upper end by aspider-frame 26, through the central opening of which the pump-rodpasses. The external form of the spreader or plug is conical, the samebeing gradually Vreduced from its upper end to a point near its lower,as in vlower end of the coupling or union, and the IOO dicated at 27,and immediatelybelow the same left plain or cylindrical, as at 28.

In assembling the parts the pump-rod and itsI plunger-head are loweredinto the barrel, after which the upper section of the working barrelis-connected to the lower section by the before-described union orcoupling. The tapered plug is now mounted over the upper end of thepump-rod and the lower end of the plug pressed into the slitted tube.The whole is now lowered into the well-tube 30, and in order to effect atight joint between thc upper end of the working barrel and the saidtube it is simply necessary to raise and let fall the sucker and pumprod or lower the same and drive it from the upper end. In either casethe impact serves to force the tapered plug within the upper ends of theslittedA rubber-bound tubes and they are caused to expand and a tightjoint is effected between the rubber boss formed on the sleeve and theinner surface of the well tube or pipe.

It will be seen that by locating the joint at the upper end oftheworking barrel sand and grit will be prevented from working into thespace between the working barrel and wellpipe, and hence offering greatobstruction to any attempt at withdrawing the working barrel from thewell-pipe.

Having now described the manner of forming the joint, I will proceed todescribe the manner of loosening the same or unlocking the workingbarrel from the well-pipe. In this operation the pump-rod is elevated,so that its annular shoulder will come in contact with the spider of thespreading-plug and by its impact will elevate the plug sufti ciently topartly withdraw it and so as to relieve the spreading tubes of itsiniiuence. By the time that the spreading-plug has been partiallywithdrawn the plunger-head comes in contact with the lower ends of thevalve-stems mounted on the coupling, and, elevating them, raises thevalve-plugs from the seats, permitting the head of water above thevalve-seats to be reduced by passing out through the escape-ports andinto the space between the working barrel and the well-pipe. The objectof providing for this escape of water is to avoid the pressure of thesame tending to spread the tubes after the plug has been withdrawn andto permit said tubes to instantly contract and release or destroythejoint formed between the same and the Well-pipe. As soon as the tubeshave contracted and the joint destroyed a farther upward movement of thepump-rod will by reason of the plunger contacting with the under side ofthe coupling elevate the entire Working barrel, valves, 'spreaders, andpum p-rod at one and the same time.

I do not herein limit my invention to the exact manner herein shown anddescribed for effecting the joint between the working barrel and thewell-pipe, but hold that I may vary the same in any manner and to anyextent within the skill of those conversant with the art.

Having described my invention, what I claim is- .1. In a pump, thecombination, with the well-pipe, a working barrel, andan expansible andcontractible joint located in the upper end of the barrel, of apump-rod, an expanding'device mounted on the rod, and escape-ports foreasing the head of water above the plunger of the rod, substantially asspecified.

2. In a pump, the combination, with the well-pipe, a working barrel, andan expansible and contractible joint located in the upper end of thebarrel, of a pump-rod,an expanding device mounted on the rod, a plungerat the lower end of the rod, escape-ports located in the working barrel,valves for closing the same, and stems extending from the valves intothe path of and adapted to be struck by the plunger, substantially asspecitied.

3. In a pump, the combination, with the well-pipe and the working barrellocated therein, of a tube inserted in the working barrel andlongitudinally slitted to form springtongues a packing-sleeve about thetube and having its upper end enlarged and overlapping the upper end ofthe tube and taking between the tube and pipe, a pump-rod, and a conicalplug, through which the rod passes,

inserted in the tube and adapted to be driven therein for spreading thesame, substantially as specified.

4t. In a pump, the combination, with the well-pipe and the pump-barrel,of a slittedtube having a series of spring-tongues and provided with anexternal packing-ring the upper end of which overlaps the upper end ofthe tube and terminates between it and the pipe, a pump-rod mountedloosely in the working barrel and provided with shoulders arranged somedistance apart, and a conical plug mounted on the rod between theshoulders, adapted to be struck thereby and inserted into the upper endof the slitted tube, substantially as specified.

5. In a pump, the combination, with the well-pi pe, the workin g barrel,the pair of slitted tubes arranged one within the other and both locatedin the upper end of the Working barrel, and the rubber sleeve encirclingthe inner tube and located within the outer one and having its upper endprovided with an external enlargement or packing-ring slitted at itslower edge to receive the upper end of the external tube, of thepump-rod provided with the upper and lower shoulders and the conicalspreading-plug having the hollow bore and provided at its upper end witha spider provided with a central opening for the pumprod and locatedupon the latter between its shoulders, substantially as specified.

G. In a pump, the combination, with the well-pipe, the cylinder-sectionsinteriorly threaded` the intermediate exteriorly-threaded couplinghaving the opposite pairs of IOO IIO

guide-perforations, andv intermediate valve-V ro the former adapted tocontact with the valvestelns and the latter with a conical plug locatedon the rod and adapted to spread the said joint, substantially asspecified.

In testimony that I claim the foregoing as my own I have `hereto affixedmy signature in r 5 the presence of two Witnesses.

- AUGUST D. COOK. Witnesses:

JNO. H. SIGGERS, W. S. DUVALL.

